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Message ID: 663     Entry time: Wednesday, May 29, 2024, 22:55
Author: Darwin Ortiz Rosales 
Target Material: SiC 
Target Oven W.O#:  
Source: LP TUBE 
Status: Done 
Subject: Repeat of SiC experiment with mixed only casts 

Wednesday, May 29, 2024, 22:52

Small graphite cartridge was loaded with SiC discs 240523-1 and 240523-2 and 220727-2 (baseline discs).  Test Discs produced without milling using PAA as a dispersant.

The coated container tube was wrapped in four Ta foil heatshields.

two Tac Coated springs at the ends in case plugs are pushed outwards.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final TGHT current= ~400A (adjustable)

Heating autoramp 2A/min to 90 A

Then at 2A/min to 120A.

Good vacuum = 5.0 e-02 Torr

Bad vacuum = 5.0E-04 Torr

 IGP1 initial 4.8e-07 Torr


Wednesday, May 29, 2024, 22:54

Kept at 400 A for 4 hours. 

Starting autoramp down at -2A/min

 

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